If is defined as a function of , then for every value, there can only be one value. Try letting for both of those and seeing whether this is true.

December 9th 2011, 02:05 AM

moonwoo

Re: Introduction to functions

Can you solve it to me

December 9th 2011, 02:17 AM

emakarov

Re: Introduction to functions

No, the only way though this is for you to understand how to solve this problem. First, you need to understand what a relation and a function are and be able to give examples of relations that are functions as well as relations that are not functions. Then you can follow Quacky's advice.